After I upgraded to OH 4.1.0 today I noticed that the Sitemaps now show an up to 3 column layout on the web browsers. This is very helpful since more information can be displayed on one screen if there is available space.
I noticed, however, that the space for Mapping Switches is not enough. The switch display is overlapping with the next displayed item which confuses the users:
Yes, there is a setting to control how many columns to use. So you can restore old behaviour.
That being said I am also not satisfied with buttons overlapping on next elements when there is not enough place. For the future, I have the idea to switch to a buttongrid rendering for example when you have more than two of three buttons, buttons will then be rendered on additional lines.